Rotary nozzle.



A. SCHMIDT.

ROTARY NOZZLE.

APPLICATION FILED EAR. 7, 1908. 903,788.

Patented Nov. 10, 1908.

' WITNESSES:

IN VEN TOR.

Augusjus Schmidl BY ATTORNEY.

AUGUSTUS SCHMIDT, 0F INDIANAPOLIS, INDIANA.

ROTARY INQZZLIEI.

7 Specification of Letters Patent.

Patented Nov. 10, 1908.

Application filed March 7,1908. Serial No. 419,812.

To all whom 'it may concern:

Be it known that I, AUGUSTUS SCHMIDT, of Indianapolis, county ofMarion,' and State of Indiana, have invented a certain new and usefulRotary Nozzle; and I do hereby declare that the following is a full,clear, and exact description thereof, reference being had to theaccompanying drawings, in which like letters refer to like parts.

The object of this invention is to provide a simplified, unobjectionableand effective automatic fire extinguishing water spraying mechanism tobe connected with public water service pipes or other pipes in whichwater is kept or may be introduced under pressure and which is set inoperation by the heat caused by a fire.

The chief feature of the invention consists in mounting in connectionwith the pipe containing the water under pressure a rotary sprayingdevice globular in form provided with tangentially arranged outletsembedded so as not to project beyond the spherical wall of the nozzleand, therefore, not liable to be broken or to be interfered with inrotation. Heretofore, devices of the kind have had projecting nozzleswhich, when the fire would occur would often be interfered with by someobject accidentally or purposely stationed near the apparatus so thatthe same could not rotate and the same was liable 'to be broken from thebody of the nozzle. I

Another feature of the invention consists in so forming annular recessesin the globular nozzle or spraying means that the grit, sand, gravel andlike substances would accumulate in the recesses during the operation ofthe device and not, therefore, lodge in or interfere with the dischargeopenings.

Another feature of the invention consists in providing a means forpositively holding the valve closed normally which means is firmlysecured to the structure by a metal, that firmly holds it and yet isfusible ata relatively low degree of temperature, say 160 degreesFahrenheit, so that in case of a fire, the valve will be released assoon as the heat becomes suflicient to fuse said valve holding means.

Another feature of the invention consists in forming a valve withits'inner and outer surfaces made of brass or other corrosive materialand the intermediate portion formed of non-corrosive material, wherebythe valve will not corrode.

dition in full lines but the operative condition being shown by dottedlines. Fig. 3

is a central cross section on the line 33 of Fig. 2, showing the issueof water from the rotary spraying device. Fig. 4 is aside elevation ofthe fusible valve holding means. Fig. 5 is a section on the line 5-5 ofFig.4.

In the drawings 10 represents a water pipe running into a building inwhich water is maintained or introduced under pressure. There can be anynumber of fire extinguishers attached to said pipe. A short pipe 11 isconnected with said main pipe 10, preferahl y extending downwardlytherefrom and having an outwardly extending annular collar 12 and onsaid collar there is an externally threadedflange 13 to receive a ballbearing ring 14 for holding bearing balls 15. A sleeve 16 is rotatablymounted in said ball bearing arrangement and has an upper outwardlyextending annular flange and to its lower end a spherical sprayingdevice 17 is screwed. This spraying device is centrally depressed orcontracted to form annular recesses 18 on each side of said contractedportion so that the lower and upper walls of saidcontracted portion willbe substantially horizontal; The function of these recesses is toprovide for the accumulation of grit, sand and gravel or other materialin the 'water and hold'the same during the operation of the sprayingdevice. This arises from the effect of centrifugal force on saidmaterials, and the formation and arrangementof the recesses. Thespherical-spraying device herein shown is provided with fourtangentially disposed outlets 20 which lead from the contracted portionof the sphere and are wholly embedded within the spherical outline ofthe spraying device, so that they do not project. The water is fireextinguishnormally shut ofl from the spraying device by a valve 25. Theperiphery of the valve is tapering and the ma or portion composed ofnon-corrosive material. As herein shown it is formed of an upper brassplate 26, a lower brass plate 27 and an intermediate body ofnon-corrosive metal 28. Said valve is beveled to fit an annular seat sothat said non-corrosive material normally engages the seat. By reason ofthis construction the injurious effects of corrosion are avoided. Thevalve has a stem 30 that projects down centrally through the sphericalspraying device with its lower end extending loosely into an opening 31in the plug 32 that screws into an opening in the lower part of saidspherical spraying device and the valve is held seated by a plate orblock 33 that is secured against the lower end of the valve stem andsecured to the plug 32 by a metal composition 34 that is fusible at arelatively low temperature. For this purpose the plug 32 has adownwardly extending portion to one side of the opening of said lug andthe said plate 33 is secured imme iately below the opening through theplug to make the union of the part 33 with the part 32 by the fusiblematerial very strong, and this effectively*holds the valve closedagainst considerable water pressure. The lower end of the plate 33 isprovided with a slot 35 into which said securing material 34 is filledand projects, as shown in Figs. 2, 4.- and 5. On the occasion of a fire,when the temperature rises to 160 degrees Fahrenheit, the adheringmaterial 34 melts, whereupon the pressure of the water in the pipes 10and 11 acting a 'ainst the valve, through the valve stem, forces thevalve-holding late 33 from its place, whereupon the val ve is forceddownwardly to the dotted line position in Fig. 2. Then the sprayingapparatus operates until the water is shut off, after which the partsare replaced in their normal condition.

The invention is not necessarily limited to use in connection with apipe in which water is maintained all the time un'der pressure, for itcan be used also with the so called dry' system, wherein the pipe towhich the extinguishers are connected is empty except when the firetakes place. With a series of my fire extinguishers with such a pipeonly the extinguisher which is close enou h to the fire to be influencedthereby will e put in operation and the rest will not operate, so thatthe dama e done by the water will be confined to the ocation of thefire.

For the purpose of spraying or throwing the water upwardly apertures 40are provided in the upper part of the spherical spraying device 17.

What I claim as my invention and desire to secure by Letters Patent'is:

1. The combination. with meansto contain a ring that screws on saidfluid under pressure, and a' spraying device rotatably mounted on theend thereof adjacent the outlet, of a tapering valve for clossaidoutlet, the tapering surface of said in valve having an intermediatefilling of noncorrosive material and a layer of brass or the like oneach side thereof, whereby the portion of said valve that engages saidseat will be non-corrosive. a

2. The combination of stationary means adapted to contain fluid underpressure, a

spraying device rotatably mounted on the end thereof adjacent the outletfrom said means, and a valve, for closing said outlet that is mounted inconnection with said spraying device.

3. The combination of a pipe adapted to contain fluid under pressurewith an outwardly extending collar at the outlet end thereof whichcarries an externally threaded flange, a spraying device with anupwardly extending tubular portion having an outwardly extending collarand adapted to fit within said collar and flange on said pipe,

collar for forming a ball race between said flanges and said ring, ballsin said ball race, and a Valve for closing the outlet openlng from theplpe.

4. The combination of a pipe adapted to contain water under pressure,aspraying device rotatably mounted in connection therewith, a valve forclosing the outlet from said 1 e pi aying device for holding the valvenormally closed.

5. The combination of a pipe adapted to contain water under pressure, aspraying device rotatably mounted in connection therewith, a valve forclosing the outlet from said pipe to said sprayingl device that has astem extending through t e spraying device, and means fusibly mountedagainst the lower end of the valve stem for holding the valve closed,whereby when the stem holding means escapes under the influence of heat,the water pressure can drive said valve downwardly in the sprayingdevice and out of the path of the water.

, 6. The combination of a pipe adapted to contain water under pressure,a spraylng device rotatably mounted in connection therewith with a holein its lower end, a valve for closing the outlet from-said pipe to thespraying device with a stem extending through said hole, and a fusiblymounted plate bearing against the external end of said stem so thatwhen, said plate escapes by the influence of heat the stem of the valvecan pass through said hole and permit the opening movement of the valve.

7. A fire extinguishing apparatus including a cylindrical sprayingdevice rotatably mounted with an annular depression in the wall thereof,tangential outlets located in said depression, whereby the outlets willnot and means fusibly connected to the y extend beyond the periphery ofsaid sprayfor the accumulation of sand and other sublng device. stancesduring the operation of the device.

8. A fire-extinguishing agparatus includ- In I witness whereof, I havehereunto ing a spherical spraying evice rotatably aflixed my signaturein the presence of the 5 mounted and centrally provided with ananwitnesses herein named.

nular depression provided with tangential outlets that do not extendbeyond the spherv AUGUSTUS SCHMIDT ical outline of the spraying device,said de- Witnesses: v pression being so formed as to provide an OLIVEBREEDEN,

10 annular recess Within the spraying device V. H. LOCKWOOD.

